Tool submitted by Kory Sonnier.
Freevo is an open-source home theatre PC platform based on Linux and a number of open-source audio/video tools. MPlayer and/or Xine can be used to play audio and video files in most popular formats. Freevo can be used both for a standalone PVR computer with a TV+remote, as well as on a regular desktop computer using the monitor and keyboard.
Freevo is easy to download and install for new users. Most hardware is supported (graphic boards, sound cards and video capture devices).
Project Page: http://www.sourceforge.net/projects/freevo
Mailing Lists: http://sourceforge.net/mail/?group_id=46652